On September 9, 2021, the California Air Resources Board (CARB or the Agency) released a draft proposal for the Agency’s Advanced Clean Fleets (ACF) regulation, which would mandate zero emissions for all new medium- and heavy-duty trucks sold in the state beginning in 2040. The draft proposal provides an exemption for authorized emergency vehicles. The ACF draft proposal is intended to complement the Agency’s landmark Advanced Clean Trucks regulation issued in June 2020, which requires medium- and heavy-duty truck makers to begin selling a certain percentage of zero-emission models beginning in model year 2024.
The rule also includes zero emissions mandates for public state fleets, drayage trucks, and high-priority and federal fleets. In the ACF proposal package, CARB includes a presentation, cost discussion document, and draft regulatory language regarding the 100% zero-emission-vehicle sales mandate, public fleet requirements, high-priority and federal fleet requirements, and drayage truck requirements. The public comment period is open until September 27, 2021.